Wagon loader



June ,,1 w. BOSWORTH WAGON LOADER Filed Oct, 24, 1929 2 Sheets-Sheet 1 INVENTOR ATTORNEY S Jh ric: 16, 1931. I w. H. BOSWORTH 1,810,069

WAGON LOADER Filed Oct. 24. 1929 2 Sheets-Sheet 2 INVENTOR ATTORN EYS such machines.

Patented June 116, 19 31 UNITED STATES PAT T FFIE WILLIAM H. BOSW'ORTI-I, OF YONKEES, NEW YORK, ASSIGNOR TO GEORGE I-IAISS MANU- FACTURING CO. INCL, OF NEW YORK, N. Y., A COREORATION OF NEW YORK- WAGON LOADER- Application filed October 24, 1929. Serial No. 402,166.

This invention relates to wagon loaders and excavators, and is directed particularly to the digging and feeding mechanism of The primary object of this invention is to provide a novel digging and feeding mechanism by which the operation'of such a machine as that to which the present invention relates may be satisfactorily carried out under adverse conditions, as when, for example, the material to be handled is of such a nature as to require loosening or breaking up thereof before it can be effectively acted upon by the material-propelling means.

To the above end the present invention'contemplates the use of a plurality of digging. elements or picks for loosening or breaking up firmly packed and frozen material, such as soil, earth, sand, gravel'and the like, in

combination with rotatable material-propelling means, andmore specifically'suitably supported propeller blades for moving the loosened or broken up material into the path of the conveyor by which such material is picked up, elevated and discharged into a truck or other vehicle adapted to receive the same, the digging elements or picks being carried by the outer ends of the propeller blades and tapered to a relatively sharp entering edge at their respective forward ends.

Other objects and advantages of the invention will become apparent from the following description, taken in connection with the accompanying drawings, in Whicl1- Figure 1 is aside elevation of the pick-up end of a wagon loader and excavator em- .bodying this invention; Figure 2'is an end view of the machine as viewed from the right n F1 gure 1 Figure 3 1s a sectional view taken on line 33 of Figure 2, one of the picks or digging elements being shown detached from its propeller blade; Figure 4 is a view in elevation of one of the propeller blades shown at the left in Figure 2, the faces of which propeller blades are oppositely inclined to the faces of the propeller blades at the right in Figure 2; and Figure 5 is a sectional view taken on line 55 of Figure 4.

Loaders of the type above mentioned include a frame 10 adjustably mounted on a '3035 to each other.

traction device 11 by which the machine may be propelled from place to place and crowded at slow speed toward and into the, materlal to be excavated, there being a power unitvsuch as an internal combustion engine (not shown) employed as a driving means for the traction deviceas well as for the bucket conyeyor 12. This conveyor includesa plural- 1ty of buckets 13 carried by a pair of chains 14, passing over the sprockets, ofwhich the,

lower sprockets l5 only are shown, thesesprockets being secured to the intermediate portion of a shaft 16, which is journalled at 17 in the lower end of the frame 10 and extends transversely of the machine. It will be'understood that the driving connection be- 1 tween the power unit and the conveyor chains 14, which drives the shaft 16, is such that the shaft is rotated in the direction of the arrow A in Figure 1.

extend from each side of the journal boxes 17, area plurality of radially projecting and lat erally disposed propeller blades 19 which are adapted to impart'forwardly and upwardly directed impacts to the material to be loaded to loosen such material andto move it toward andinto the path of the conveyor buckets, such movement of thematerial being effected byreason of'the fact that "the angulariinner faces of the propeller blades at one side ofthereof are a plurality of lugs or tongues 20* to which are detachably secured a plurality of picks or digging elements 22. Each of these digging elements istapered to a relatively sharp entering edge-at its forward end,

the taper being such that its inner and outer faces 23 and 2 1 are at an angle of preferably the entering edge of each pick is located at a greater distance from the center of the shaft 16 than the outer edge of its corresponding 76 Secured to portions of the shaft 16, which 1 It will be noted that i loo located at thepick-up end of said conveyor scribed by the entering edge of the pick as the material-feeding mechanism is rotated. By reason of the disposition of the entering edge of the pick, the material to be loaded is subjected to the action of the digging element radially beyond the respective propeller blades, thus providing for ease in rotation of the material-feeding mechanism at a considerable savingin power. Moreover, byreason of the fact tl-at the outer face of each digging element is slightly inclined from the entering point of the pick towards the center of rotation of the material-feeding mechanism, the outer faces of these teeth are not required to slide over the tightly packed material at the rear of the entering edges of the teeth as they pass through the material, withthe result theta further saving inpower is-elfected. As aresult of the inclimtion of the inner faces 23 of the dig ing elements, the material being acted upon by them is permitted to pass easily up over such faces as the teeth pass through the-materialand imp-art to it combined skimming and Eplowing action which, together with-the upwardly and forwardly directed impacts delivered bythe series of teeth and the pluralityof propeller blades to the material to be-loaded, effectively break up such material sothat thepropeller blades may easily move thematerialacted upon toward and into the path of the buckets 13 of the conveyor.

Regardless of whether themachine isomployed in the handling of loose or compact material, the path of travel of the conveyor bucket-sis cleared by the buckets themselves, which, due to the provision of digging teeth 27 on the forward edge thereof, can beforced forwardly and upwardly through the material with comparative ease. The path which is cleared by the buckets provides roomto receive material. which is moved in-v Wardly from opposite sides cf-the conveyor by-the material-propelling means as the machine advances toward and into the material to be loaded or excavated.

Although only one'form of theinvention is herein shown and particularly described, it will be understood that certain modifications may be employed withoutdeparting from the spirit of the invention-orthe scope ofthe following claim, as, for-example, the number of propeller blades and teeth or digging elements'may be varied as desired.

What is claimed-is:

A machine of the character described comprising a conveyor having buckets adapted to receive material at the pick-up end of the conveyor and elevate it to the discharge end of the same, a. rotatable shaft and projecting outwardly beyond opposite sides thereof, aplurality of;propeller blades carried by said shaft at opposite ends of said shaft and adapted to impart forwardly and propeller blades, said dig-gingelements being tapered forwardly and terminating in "entering edges located 111 advance of the respective propeller blades.

ill testimony whereoi, I have affixed my signature to this specification.

WILLIAM BosWonTn. 

